Simultaneous rocket and scintillation observations of plasma irregularities associated with a reversed flow event in the cusp ionosphere
We present an overview of the ionospheric conditions during the launch of the Investigation of Cusp Irregularities 3 (ICI‐3) sounding rocket. ICI‐3 was launched from Ny‐Ålesund, Svalbard, at 7:21.31 UT on 3 December 2011. The objective of ICI‐3 was to intersect the reversed flow event (RFE), which i...
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ftunivbergen:oai:bora.uib.no:1956/22635 2023-05-15T16:04:48+02:00 Simultaneous rocket and scintillation observations of plasma irregularities associated with a reversed flow event in the cusp ionosphere Jin, Yaqi Moen, Jøran Idar Spicher, Andres Oksavik, Kjellmar Miloch, Wojciech Jacek Clausen, Lasse Boy Novock Pożoga, Mariusz Saito, Yoshifumi 2019-11-22T09:18:28Z application/pdf https://hdl.handle.net/1956/22635 https://doi.org/10.1029/2019ja026942 eng eng Wiley urn:issn:2169-9402 urn:issn:2169-9380 https://hdl.handle.net/1956/22635 https://doi.org/10.1029/2019ja026942 cristin:1721990 Attribution CC BY http://creativecommons.org/licenses/by/4.0/ Copyright 2019 The Author(s) Journal of Geophysical Research (JGR): Space Physics Peer reviewed Journal article 2019 ftunivbergen https://doi.org/10.1029/2019ja026942 2023-03-14T17:41:32Z We present an overview of the ionospheric conditions during the launch of the Investigation of Cusp Irregularities 3 (ICI‐3) sounding rocket. ICI‐3 was launched from Ny‐Ålesund, Svalbard, at 7:21.31 UT on 3 December 2011. The objective of ICI‐3 was to intersect the reversed flow event (RFE), which is thought to be an important source for the rapid development of ionospheric irregularities in the cusp ionosphere. The interplanetary magnetic field was characterized by strongly negative Bz and weakly negative By. The EISCAT Svalbard radar (ESR) 32‐m beam was operating in a fast azimuth sweep mode between 180° (south) and 300° (northwest) at an elevation angle of 30°. The ESR observed a series of RFEs as westward flow channels that were opposed to the large‐scale eastward plasma flow in the prenoon sector. ICI‐3 intersected the first RFE in the ESR field of view and observed flow structures that were consistent with the ESR observations. Furthermore, ICI‐3 revealed finer‐scale flow structures inside the RFE. The high‐resolution electron density data show intense fluctuations at all scales throughout the RFE. The ionospheric pierce point of the GPS satellite PRN30, which was tracked at Hornsund, intersected the RFE at the same time. The GPS scintillation data show moderate phase scintillations and weak amplitude scintillations. A comparison of the power spectra reveals a good match between the ground‐based GPS carrier phase measurements and the spectral slope of the in situ electron density data in the lower frequency range. It demonstrates the possibility of modelling GPS scintillations from high‐resolution in situ electron density data. publishedVersion Article in Journal/Newspaper EISCAT Hornsund Ny Ålesund Ny-Ålesund Svalbard University of Bergen: Bergen Open Research Archive (BORA-UiB) Hornsund ENVELOPE(15.865,15.865,76.979,76.979) Ny-Ålesund Svalbard Journal of Geophysical Research: Space Physics 124 8 7098 7111 |
institution |
Open Polar |
collection |
University of Bergen: Bergen Open Research Archive (BORA-UiB) |
op_collection_id |
ftunivbergen |
language |
English |
description |
We present an overview of the ionospheric conditions during the launch of the Investigation of Cusp Irregularities 3 (ICI‐3) sounding rocket. ICI‐3 was launched from Ny‐Ålesund, Svalbard, at 7:21.31 UT on 3 December 2011. The objective of ICI‐3 was to intersect the reversed flow event (RFE), which is thought to be an important source for the rapid development of ionospheric irregularities in the cusp ionosphere. The interplanetary magnetic field was characterized by strongly negative Bz and weakly negative By. The EISCAT Svalbard radar (ESR) 32‐m beam was operating in a fast azimuth sweep mode between 180° (south) and 300° (northwest) at an elevation angle of 30°. The ESR observed a series of RFEs as westward flow channels that were opposed to the large‐scale eastward plasma flow in the prenoon sector. ICI‐3 intersected the first RFE in the ESR field of view and observed flow structures that were consistent with the ESR observations. Furthermore, ICI‐3 revealed finer‐scale flow structures inside the RFE. The high‐resolution electron density data show intense fluctuations at all scales throughout the RFE. The ionospheric pierce point of the GPS satellite PRN30, which was tracked at Hornsund, intersected the RFE at the same time. The GPS scintillation data show moderate phase scintillations and weak amplitude scintillations. A comparison of the power spectra reveals a good match between the ground‐based GPS carrier phase measurements and the spectral slope of the in situ electron density data in the lower frequency range. It demonstrates the possibility of modelling GPS scintillations from high‐resolution in situ electron density data. publishedVersion |
format |
Article in Journal/Newspaper |
author |
Jin, Yaqi Moen, Jøran Idar Spicher, Andres Oksavik, Kjellmar Miloch, Wojciech Jacek Clausen, Lasse Boy Novock Pożoga, Mariusz Saito, Yoshifumi |
spellingShingle |
Jin, Yaqi Moen, Jøran Idar Spicher, Andres Oksavik, Kjellmar Miloch, Wojciech Jacek Clausen, Lasse Boy Novock Pożoga, Mariusz Saito, Yoshifumi Simultaneous rocket and scintillation observations of plasma irregularities associated with a reversed flow event in the cusp ionosphere |
author_facet |
Jin, Yaqi Moen, Jøran Idar Spicher, Andres Oksavik, Kjellmar Miloch, Wojciech Jacek Clausen, Lasse Boy Novock Pożoga, Mariusz Saito, Yoshifumi |
author_sort |
Jin, Yaqi |
title |
Simultaneous rocket and scintillation observations of plasma irregularities associated with a reversed flow event in the cusp ionosphere |
title_short |
Simultaneous rocket and scintillation observations of plasma irregularities associated with a reversed flow event in the cusp ionosphere |
title_full |
Simultaneous rocket and scintillation observations of plasma irregularities associated with a reversed flow event in the cusp ionosphere |
title_fullStr |
Simultaneous rocket and scintillation observations of plasma irregularities associated with a reversed flow event in the cusp ionosphere |
title_full_unstemmed |
Simultaneous rocket and scintillation observations of plasma irregularities associated with a reversed flow event in the cusp ionosphere |
title_sort |
simultaneous rocket and scintillation observations of plasma irregularities associated with a reversed flow event in the cusp ionosphere |
publisher |
Wiley |
publishDate |
2019 |
url |
https://hdl.handle.net/1956/22635 https://doi.org/10.1029/2019ja026942 |
long_lat |
ENVELOPE(15.865,15.865,76.979,76.979) |
geographic |
Hornsund Ny-Ålesund Svalbard |
geographic_facet |
Hornsund Ny-Ålesund Svalbard |
genre |
EISCAT Hornsund Ny Ålesund Ny-Ålesund Svalbard |
genre_facet |
EISCAT Hornsund Ny Ålesund Ny-Ålesund Svalbard |
op_source |
Journal of Geophysical Research (JGR): Space Physics |
op_relation |
urn:issn:2169-9402 urn:issn:2169-9380 https://hdl.handle.net/1956/22635 https://doi.org/10.1029/2019ja026942 cristin:1721990 |
op_rights |
Attribution CC BY http://creativecommons.org/licenses/by/4.0/ Copyright 2019 The Author(s) |
op_doi |
https://doi.org/10.1029/2019ja026942 |
container_title |
Journal of Geophysical Research: Space Physics |
container_volume |
124 |
container_issue |
8 |
container_start_page |
7098 |
op_container_end_page |
7111 |
_version_ |
1766400436709883904 |